YOU SAID:

sorry when she is not your thing in the yesterday today

INTO JAPANESE

昨日今日は彼女があなたのものじゃなかったらごめんなさい

BACK INTO ENGLISH

I'm sorry if she wasn't yours yesterday and today.

INTO JAPANESE

昨日も今日も彼女があなたのものじゃなかったらごめんなさい。

BACK INTO ENGLISH

I'm sorry if she wasn't yours yesterday or today.

INTO JAPANESE

昨日や今日、彼女があなたのものではなかったらごめんなさい。

BACK INTO ENGLISH

I'm sorry if she wasn't yours yesterday or today.